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Volume 8, issue 1
Earth Syst. Sci. Data, 8, 105-113, 2016
https://doi.org/10.5194/essd-8-105-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Earth Syst. Sci. Data, 8, 105-113, 2016
https://doi.org/10.5194/essd-8-105-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

  01 Mar 2016

01 Mar 2016

A database of multi-year (2004–2010) quality-assured surface solar hourly irradiation measurements for the Egyptian territory

Mohamed Korany1, Mohamed Boraiy2, Yehia Eissa3,4, Youva Aoun4, Magdy M. Abdel Wahab5, Stéphane C. Alfaro6, Philippe Blanc4, Mossad El-Metwally7, Hosni Ghedira3, Katja Hungershoefer8, and Lucien Wald4 Mohamed Korany et al.
  • 1Egyptian Meteorological Authority, Cairo, Egypt
  • 2Physics and Mathematical Engineering Department, Faculty of Engineering, Port Said University, Port Said, Egypt
  • 3Masdar Institute, Research Center for Renewable Energy Mapping and Assessment, P.O. Box 54224, Abu Dhabi, UAE
  • 4MINES ParisTech, PSL Research University, O.I.E. – Centre Observation, Impacts, Energy, CS 10207 – 06904 Sophia Antipolis CEDEX, France
  • 5Astronomy and Meteorology Department, Faculty of Science, Cairo University, Cairo, Egypt
  • 6Laboratoire Inter-universitaire des Systèmes Atmosphériques, Universités de Paris-Est Créteil et Paris-Diderot, France
  • 7Physics Department, Faculty of Science, Port Said University, Port Said, Egypt
  • 8Deutscher Wetterdienst, Offenbach, Germany

Abstract. A database containing the global and diffuse components of the surface solar hourly irradiation measured from 1 January 2004 to 31 December 2010 at eight stations of the Egyptian Meteorological Authority is presented. For three of these sites (Cairo, Aswan and El-Farafra), the direct component is also available. In addition, a series of meteorological variables including surface pressure, relative humidity, temperature, wind speed and direction is provided at the same hourly resolution at all stations. The details of the experimental sites and instruments used for the acquisition are given. Special attention is paid to the quality of the data and the procedure applied to flag suspicious or erroneous measurements is described in detail. Between 88 and 99 % of the daytime measurements are validated by this quality control. Except at Barrani where the number is lower (13500), between 20000 and 29000 measurements of global and diffuse hourly irradiation are available at all sites for the 7-year period. Similarly, from 9000 to 13000 measurements of direct hourly irradiation values are provided for the three sites where this component is measured. With its high temporal resolution this consistent irradiation and meteorological database constitutes a reliable source to estimate the potential of solar energy in Egypt. It is also adapted to the study of high-frequency atmospheric processes such as the impact of aerosols on atmospheric radiative transfer. It is planned to update regularly the current 2004–2010 database, which has been placed on the PANGAEA repository (doi:10.1594/PANGAEA.848804) and contains the individual meteorological and irradiation data files of the eight stations.

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A database of global and diffuse components of the surface solar hourly irradiation measured from 2004 to 2010 at eight Egyptian meteorological stations is presented. At three sites, the direct component is also available. In addition, a series of meteorological variables is provided at the same hourly resolution. The measurements and quality checks applied to the data are detailed. Finally, 13500 to 29000 measurements of global and diffuse hourly irradiation are available at each site.
A database of global and diffuse components of the surface solar hourly irradiation measured...
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